Follow the instructions here Pumas Installation Error through VS Code - #6 by vijay
Once you enter the license key, then you at least have Pumas activated. Then you can update 2.7.1 by following the documentation
Follow the instructions here Pumas Installation Error through VS Code - #6 by vijay
Once you enter the license key, then you at least have Pumas activated. Then you can update 2.7.1 by following the documentation